Calculate panel efficiency changes with temperature

Calculate panel efficiency changes with temperature

Panel Efficiency Variation With Temperature

  • Did you know that even the most efficient solar panels will be affected by rise in temperature
  • The temperatures developed within panels will be much higher than the outside temperatures, resulting in decrease from stipulated efficiencies
  • Input your panel efficiency and the temperature in your region
  • Based on it, we will calculate the actual efficiency that will be reached by your panels


Panel Efficiency Variation With Temperature


Panel efficiency provided by manufacturer (This will be at 25 oC Standard Test Conditions – STC)

%

Usual Temperature In Your Area

oC



Looking to own customized calculators?

Talk to ramya@solarmango.com

[insert_php]
$message=””;
echo $message;
if((isset($_POST[‘panel_efficiency’]))&&(isset($_POST[‘temperature’]))) {

if((!empty($_POST[‘panel_efficiency’]))&&($_POST[‘temperature’])) {
$servername = ‘localhost’;
$username = ‘solarman_cal’;
$password = ‘mv)f848R4h~&’;
$dbname = ‘solarman_tools’;
// Create connection

$conn = mysql_connect($servername, $username, $password) or die(“Unable to connect to MySQL”);
mysql_select_db($dbname, $conn );

$I1 = $_POST[“panel_efficiency”];
$I2 = $_POST[“temperature”];
$I3 = $I2 + 20;
$ip = $_SERVER[‘REMOTE_ADDR’];
$date= date(‘Y-m-d’);

$sql = “INSERT INTO `efficiency_temp` (`panel_efficiency`, `temperature`, `date`, `ip`) VALUES (‘$I1′,’$I2′,’$date’, ‘$ip’)”;
if (mysql_query($sql) === TRUE) {

} else {
echo “Error: ” .mysql_error() . “
“;
}
mysql_close($conn);

$answer=($I1-((($I3-25)*0.45*$I1)/100));
echo “

Calculated panel efficiency

Inputs

Panel efficiency at STC (25 oC):

$I1 %

Usual temperature in your region :

$I2 oC

Results

Panel efficiency at given temperature ($I2 oC): $answer %

Assumptions
  • Calculation assumes a temperature coefficient of -0.45%/oC. Please check the manufacturer’s datasheet for actual thermal coefficient.
  • Panel temperature developed will be usually 20 oC above ambient temperature.

“;

}
else{

echo “

Please fill all the fields

“;
}
}
[/insert_php]

Related Calculators




India Renewable Energy Expert